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Finding the Fourth Proportional to 330.76, 450.75 and 329.54

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Solution

The fourth proportional to 330.76, 450.75 and 329.54 is: 449.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.76 : 450.75 = 329.54 : x
  2. Step 2: Convert to fraction form
    330.76/450.75 = 329.54/x
  3. Step 3: Cross multiply
    330.76x = 450.75 × 329.54
  4. Step 4: Simplify right side
    330.76x = 148,540.98
  5. Step 5: Solve for x
    x = 148,540.98/330.76
  6. Step 6: Final answer
    x = 449.10

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.